40cm Stainless Steel Bow Crucible Tongs, Extra Long Subcategory_Force and Motion and hygrometer in a single

and hygrometer in a single classroom-scale unit for monitoring room conditions at a glance

Sprung-tip jockey contact slides smoothly along the resistance wire of a Wheatstone bridge or potentiometer to find the null-deflection balance point during student-built bridge experiments

ten per pack

Three-inch (75mm) magnifying lens on a 6

and pendulum period in physics experiments

40cm Stainless Steel Bow Crucible Tongs, Extra Long Subcategory_Force and Motion and hygrometer in a singleExtra long 40 cm bow style stainless steel crucible tongs distance hands from furnace heat while gripping crucibles during high temperature analytical chemistry work.